net.foreworld.util.RestUtil.java Source code

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Here is the source code for net.foreworld.util.RestUtil.java

Source

package net.foreworld.util;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.Locale;

import javax.crypto.KeyGenerator;
import javax.crypto.Mac;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

import org.apache.commons.codec.binary.Base64;

/**
 * RestUtil
 *
 * @author huangxin (3203317@qq.com)
 * @license LGPL (http://www.gnu.org/licenses/lgpl.html)
 * @copyright FOREWORLD.NET
 */
public class RestUtil {

    private static final String ALGORITHM = "HmacSHA1";
    private static final String ENC = "UTF-8";

    public static String genSignature(String data, String key) {
        byte[] byteHMAC = null;
        try {
            Mac mac = Mac.getInstance(ALGORITHM);
            SecretKeySpec spec = new SecretKeySpec(key.getBytes(), ALGORITHM);
            mac.init(spec);
            byteHMAC = mac.doFinal(data.toLowerCase(Locale.getDefault()).getBytes());
        } catch (InvalidKeyException ignore) {
            return null;
        } catch (NoSuchAlgorithmException ignore) {
            return null;
        } // END

        if (null == byteHMAC)
            return null;

        // String code = new BASE64Encoder().encode(byteHMAC);
        String code = Base64.encodeBase64String(byteHMAC);

        try {
            return URLEncoder.encode(code, ENC);
        } catch (UnsupportedEncodingException ignore) {
        }
        return null;
    }

    public static String genApiKey() {
        try {
            KeyGenerator generator = KeyGenerator.getInstance("HmacSHA1");
            SecretKey key = generator.generateKey();
            String encodedKey = Base64.encodeBase64URLSafeString(key.getEncoded());
            return encodedKey;
        } catch (NoSuchAlgorithmException ignore) {
        }
        return null;
    }

    public static String genSecKey() {
        return genApiKey();
    }
}